Performance of 6 Different Global Navigation Satellite System Receivers at Low Latitude Under Moderate and Strong Scintillation
Performance of 6 Different Global Navigation Satellite System Receivers at Low Latitude Under Moderate and Strong Scintillation
复制标题
6种不同全球导航卫星系统接收机低纬度中强闪烁下的性能
DOI：
10.1029/2020ea001314
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发表时间：
2021
影响因子：
3.1
通讯作者：
J‐M. Slewaegen
中科院分区：
文献类型：
--
作者：
E. D. de Paula;A. Martinon;A. Moraes;C. Carrano;A. C. Neto;P. Doherty;K. Groves;C. Valladares;G. Crowley;I. Azeem;A. Reynolds;D. Akos;T. Walter;T. Beach;J‐M. Slewaegen
日落后，由于广义Rayleigh-Taylor不稳定性，在赤道地区产生了电离层等离子体的不规则性。在有利的条件下，这些不规则性在赤道区域发展，同时沿着磁力线映射，产生被称为赤道等离子体气泡的大型等离子体损耗结构，其壁上嵌入了较小的结构。全球导航卫星系统(GNSS)L1波段的频率对第一菲涅尔区300-400m的不规则性很敏感，这些不规则性会引起信号的散射和绕射，并产生幅度和/或相位闪烁。全球导航卫星系统信号的严重闪烁又可能导致接收器代码和/或载波环路的失锁。因此，全球导航卫星系统的导航和定位解决方案可能会受到电离层闪烁的不利影响。有多个全球导航卫星系统接收器被设计用来监测闪烁。这些接收器基于不同的硬件设计，并使用不同的方法来处理原始数据。在使用来自不同GNSS闪烁监测仪的同时数据时，重要的是评估和比较它们在类似闪烁条件下的性能。闪烁监测技术对许多使用GNSS信号的应用可能是有用的。这项工作的目的是评估位于S何塞·多斯坎波斯(23.1°S，45.8°W，倾角17.3°S)的六个不同的全球导航卫星系统接收器在中强闪烁活动期间的性能。对2013年2月20日至21日和11月27日至28日夜间来自这些接收器的幅度(S4)和相位(σϕ)闪烁指数进行了分析和比较。
After sunset, in the equatorial regions ionospheric plasma irregularities are generated due to the generalized Rayleigh‐Taylor instability. Under favorable conditions these irregularities develop in the equatorial region while mapping along the magnetic field lines giving rise to large plasma depletion structures called Equatorial Plasma Bubbles with embedded smaller structures on their walls. The global navigation satellite system (GNSS) L1 band frequency is sensitive to irregularities of the size of 300–400 m in the first Fresnel zone, which cause scattering and diffraction of the signal and produce amplitude and/or phase scintillation. Severe scintillation of GNSS signals can in turn cause loss of lock of the receiver code and/or carrier loops. As a result, GNSS navigation and positioning solution can be adversely affected by the ionospheric scintillation. There are multiple GNSS receivers designed to monitor scintillations. These receivers are based on different hardware designs and use different methodologies to process the raw data. When using simultaneous data from different GNSS scintillation monitors it is important to evaluate and compare their performances under similar scintillation conditions. The scintillation monitoring techniques may be useful for many applications that use GNSS signal. The aim of this work is to evaluate the performance of six different GNSS receivers located at São José dos Campos (23.1°S, 45.8°W, dip latitude 17.3°S) during moderate and strong scintillation activity. The amplitude (S4) and phase (σϕ) scintillation indexes from these receivers were analyzed and compared for the nights February 20–21 and November 27–28, 2013.
低纬度区域电离层分析以支持欧空局生物质任务
影响因子：
8.2
作者：
Alfonsi L
通讯作者：
Alfonsi L